html.replace(text, fontHtml) is a string replacement operation, used to replace the string text in html with the string fontHtml

html.replace(text, fontHtml) is a string replacement operation, used to replace the string text in html with the string fontHtml.

Specifically, assume that html is an HTML code string containing the text to be replaced text and fontHtml is the new HTML code to be replaced with this text. By calling the replace() function, text can be replaced with fontHtml to get the final replaced HTML code string.

Example usage:

QString html = "<p>Hello, world!</p>";
QString text = "Hello, world!";
QString fontHtml = "<span style=\"font-family: Arial;\">%1</span>";
QString replacedHtml = html.replace(text, fontHtml.arg(text));

In the above example, html is an HTML code string containing the text "Hello, world!" to be replaced. Then, we define a fontHtml string as the new HTML code to be replaced with text, where %1 is a placeholder, using < a i=5> function replaces it with the actual text content. arg()

Replace with by calling the replace() function and store the result in < a i=4> variable. "Hello, world!"fontHtmlreplacedHtml

Eventually, the value of replacedHtml will be <span style="font-family: Arial;">Hello, world!</span>, i.e. the original text has been replaced with the new HTML code.

To summarize,html.replace(text, fontHtml.arg(text)) is a string replacement operation that replaces specified text in a string with another string. In this example, it is used to replace text with fontHtml to dynamically generate HTML code with a specific style.